Images not saved with extensions hence can't be shared to other apps.

[wathika-eng]

I selected save as and only after sometime did I note that the filename extension had been cut e.g filename.jpg to filename

[rafatosta]

I selected save as and only after sometime did I note that the filename extension had been cut e.g filename.jpg to filename

Which DE?

I took the test here at Gnome and is working perfectly.

[wathika-eng]

Gnome 46

See below:

https://github.com/user-attachments/assets/5c463e29-edff-49ef-9ba7-3c262be37465

[rafatosta]

Gnome 46

See below:

https://github.com/user-attachments/assets/5c463e29-edff-49ef-9ba7-3c262be37465

This image comes from a link preview and not an image file. In this specific case, you will have to add the extension manually.